Goldsbuby h



(No Model.)'-

G,.- H. POND..

' REDUCING WOOD, m, TD FIBER.

Patented June 6, 1882.

INVENTOR By his flttorneys,

WITNESSES:

. NITED STATES PATENT OFFICE.

GOLDSBURY H. POND, OF NEW YORK, N. Y.

REDUCING WOOD, 800., TO FIBER.

SPECIFICATION forming part of Letters Patent No. 259,206, dated J'une 6, 1882, Application filed May 7, 1881. Renewed November 17, 1881. (No model.)

To all whom it may concern:

Be it known that I, GoLnsBUaY H. POND, a citizen of the United States, residing in the city, county, and State of New York, have invented certain new and useful Improvements in Reducing Wood and other Materials to Fiber, of which the following is a specification.

This invention relates in the main to the reduction to fiber of wood and similar fibrous materials for use in the manufacture of paper,

but the same principle may be applied to other materials for other purposes. The novel features of the invention will be set forth definitely in the claims.

In carrying out my invention a jet of steam is employed to inject sawdust or other material to be disintegrated or reduced to fiber into and through a pipe or passage having angles or projections which ofi'er obstructions against which the particles are thrown with sufficient force to disintegrate them. The passage being no larger substantially than the inlet for the steam, it follows that the steam-jet cannot expand laterally and thus lose its force; but all of its force is utilized in driving the particles against the obstructions in the passage, whereby they are thoroughly disintegrated and delivered at the outlet of the passage or pipe.

In the drawings I have shown an apparatus adapted to the disintegration of sawdust and its reduction to fiber for paper-making.

Figure l is a side elevation on a small scale. Fig. 2 is a horizontal mid-section,on a large scale, arranged *to show the interior parts.

Fig. 3 is a section taken in the plane of the line 3 3 in Fig. 2. Figs. 4 and 5 are detached views, designed to show the difierence between a steam-jet discharging into an open space and one discharging into a pipe or contracted space.

In the drawings I have shown two steamjets arranged in opposition to each other, with a lateral outlet into an obstructed passage common to both. In this construction the sawdust, fed from a common hopper through separate pipes, is divided and the two streams thrown forcibly against each other, after which they mingle and pass into the obstructed passage together. I may, however, employ one jet only.

Let A represent a suitable hopper or receptacle for the sawdust, from which are led two pipes, B B, that screw into injector-chambers O 0. These chambers are tapped by steam-jet pipes D D, and are secured to the extremities of a pipe, E, which has a lateral outlet, a, Fig. 2, about midway between the points where the steam enters the pipe E. Connected with the outlet a is a pipe, F, having a passage formed of sections 1) and b, arranged at anthe pipes D, and these jets inject the sawdust at the inlets d d. The two jets impel the two streams of sawdust together with great force, and the collision serves to shatter the particles to some extent. The jets bearin g the particles then pass through the outlet at and strike forcibly against the first obstruction, e, in the pipe F, which serves to still further shatter the particles and loosen the fibers. From this obstacle the particles are deflected to the next, 0, and thence to the others, 6 e 800., in succession, until finally it issues in a perfectly-disintegrated fibrous condition and fit for pulping.

In Fig. 4 I have shown the appearance of a steam-jet permitted to expand and expend its force laterally, and in Fig. 5 a similar jet confined within a tube, whereby it is'compelled to. expend its force longitudinally. Thus by confining my steam-jet within a tube or'pipe of about the same size as the steam-pipe for the whole time in which it is operating upon the material, I am enabled to utilize all of its force in impelling the wood particles against the obstructions, which serve to reduce it to a fibrous condition. The steam also serves to soften the wood and toughen the fibers.

As before stated, I may employ but one steam-jet, and in that case I would attachthe pipeF directly to the chamber 0. I may also construct the pipe F in various ways; but I be lieve that shown to be as good as any. It is only necessary that obstructions to the direct line of travel be provided, against which the sawdust or other material may squarely im pinge as it is borne along, and enough of these should be provided to produce the desired result. Any fibrous material, like wood, will be shattered and reduced to fiber by constant beating against hard surfaces in the manner described; but some kinds will require a more extended beating than others. Therefore the pipe F may be made longer or shorter at will by adding or removing some of the sections from which it is made up.

Having thus described my invention, 1 claim- 1. The herein-described process of disintegrating or reducing to fiber wood and other materials, which consists in forcing or impelling the materials to be disintegrated against a series of deflections or obstructions, arranged in a pipe or passage, by means of ajet of steam, the passage being so contracted as to prevent the lateral expansion of the jet, substantially as set forth.

2. An apparatus for disintegrating and reducing to fiber wood and other materials, comprising a pipe with internal obstructions or deflectors and a steam-injector connected therewith, whereby the substance to be reduced is impelled with violence successively against said obstructions, the said pipe being of substantially the same size as the steam-pipe throughout, whereby lateral expansion of the steam is prevented, substantially as set forth.

3. An apparatus for disintegrating and reducing to fiber wood and other materials, comprising a pipe or tube of substantially uniform diameter throughout, and its bore made up of sections arranged at an angle to each other, so as to offer impinging and deflecting surfaces, and a steam-injector arranged to impel and force the materials through the said angular pipe or tube, substantially as set forth.

4. The combination, to form an apparatus for disintegrating and reducing to fiber wood and other materials, of a pipe, F, made up of sections forming an angular passage, Z) I), an injector-chamber, 0, connected with pipe E, a steam-jet pipe, 1), connected with said chamber O, and a pipe, B, to lead the materials to the inj ecting-point d, substantially as set forth.

5. The combination, to form an apparatus fordisintegratin g wood and reducing itto fiber, of the hopper A, pipes B B, injector-chambers C O, steam-jet pipes D D, pipe E, having a lateral outlet, a and the pipe F, provided with obstructions or deflectors, all arranged to operate substantially as and for the purposes set forth.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

GOLDSBURY II. POND.

Witnesses:

HENRY OONNETT, ARTHUR G. FRASER. 

